Colin Firth could return for a possible sequel to Kingsman: The Secret Service, Digital Spy reports.

Firth's character Harry was shot by Valentine (Samuel L Jackson) in Kingsman, but director Matthew Vaughn suggested that he is keen to bring the actor back.

"A lot of people are very upset that Colin might not be in the sequel," Vaughn told USA Today. "But I'm coming up with ideas at the moment.

"If people buy tickets in America, I've got a feeling we'll figure out a way for having Colin back."

Vaughn also hinted that Eggsy (Taron Egerton) will remain a key character in the possible sequel.

"The sequel will be, 'This is the modern-day gentleman spy'," he explained. "Because Harry isn't.

"Harry even says, 'There is a reason why we've developed weak chins'. He said that, meaning, 'Look at us, we need to get new blood into this system', and that's what Eggsy is.

"I joke that we've made the prequel to the Eggsy movie."

Kingsman: The Secret Service is out now in UK and US cinemas.